diff --git a/tests/micropython/heapalloc_int_from_bytes.py b/tests/micropython/heapalloc_int_from_bytes.py
new file mode 100644
index 0000000000..f8afd2280a
--- /dev/null
+++ b/tests/micropython/heapalloc_int_from_bytes.py
@@ -0,0 +1,8 @@
+# Test that int.from_bytes() for small number of bytes generates
+# small int.
+import micropython
+
+micropython.heap_lock()
+print(int.from_bytes(b"1", "little"))
+print(int.from_bytes(b"12", "little"))
+micropython.heap_unlock()
diff --git a/tests/micropython/heapalloc_int_from_bytes.py.exp b/tests/micropython/heapalloc_int_from_bytes.py.exp
new file mode 100644
index 0000000000..7ceb19a384
--- /dev/null
+++ b/tests/micropython/heapalloc_int_from_bytes.py.exp
@@ -0,0 +1,2 @@
+49
+12849